Search results for "brassica"

Sterol stability in functional fruit beverages enriched with different plant sterol sources

2012

Abstract Two different plant sterol (PS) sources (free PS from tall oil and esterified PS from vegetable oils) were used for manufacturing two types of functional beverages (fruit and milk-based fruit beverages), and their PS and phytosterol oxidation product (POP) contents were determined. Gas chromatography–tandem mass spectrometry (GC–MS/MS) was used for identification and gas chromatography–flame ionization detection (GC–FID) for quantitation purposes. Brassicasterol, campesterol, campestanol, stigmasterol, β-sitosterol and sitostanol were the quantified PS, conforming a profile in order with current legislation. The relative percentages of PS differed according to the enrichment source…

Evolutionary site-number changes of ribosomal DNA loci during speciation: complex scenarios of ancestral and more recent polyploid events.

2015

Genes encoding ribosomal RNA are universal key constituents of eukaryotic genomes, but the number of loci varies between species. We assessed the evolutionary trends in site-number changes of rDNA loci during speciation in a lineage of the cabbage family, characterized by complex scenarios of polyploidy. Our results suggest the existence of constrictions to burst loci amplification in the 5S rDNA family in polyploids and an overall trend to further reduce their number. The 45S rDNA site change in polyploids tells a different story, implying loci amplification in most of the polyploid entities.

Brassica trichocarpa (Brassicaceae), a new species from Sicily

2013

A new species of Brassica from Sicily, namely B. trichocarpa, is described and illustrated. This suffrutex was found on a calcareous peak of a mount near Palermo, where it is represented by a single population occupying a really small surface. It is well differentiated from the other perennial species belonging to B. sect. Brassica mainly in having hairy ovary and very short, thickened, hairy, not torulose fruits. Its relationships and taxonomical position within this group are examined too. An analytical key of the current taxa belonging to the genus Brassica sect. Brassica is also provided. 

Genetic differentiation of three species of Matthiola (Brassicaceae) in the Sicilian insular system

2005

We examined the genetic variation of 12 isozyme loci in 14 populations of Matthiola (Brassicaceae) representing the geographic distribution of the species M. incana, M. fruticulosa ssp. fruticulosa and M. tricuspidata in the Sicilian insular system and the adjacent mainland areas to estimate the levels and apportionment of genetic variation in the insular populations and to understand their population dynamics. The disparity in the distribution of polymorphism in populations of M. incana ssp. incana (low within populations but with high values of F ST and G ST ) contrasts with the homogeneity in the inter-population distribution of the high genetic variation detected in M. tricuspidata and …

Differences in the activity and distribution of peroxidases from three different portions of germinating Brassica oleracea seeds

2002

Peroxidase (POD, EC 1.11.1.7) activity, cellular localization and isozyme patterns were investigated in the seed integument, cotyledon and embryo axis of Brassica oleracea cv. Cappuccio during pregermination and seedling growth. Seeds started to germinate after 24 h of imbibition. POD activity was localized in the pigmented layer of the integument and in procambial strands of the cotyledon and embryo axis in the first 24 h of imbibition. It was localized in the integumental cells of palisade, pigmented and aleurone layers and in epidermal, meristematic, procambial cells and xylem elements of the root and hypocotyl after 48 h of imbibition. POD activity increased during germination and early…

Jaunu bioloģiskā mēslojuma preparātu izveide un testēšana veģetācijas eksperimentos ar miežiem (Hordeum vulgare L.) un rapsi (Brassica napus L.)

2016

Bioloģiskais mēslojums (BM) ir aktuāls zinātnes un lauksaimniecības temats, tomēr joprojām trūkst pētījumu par efektīvu BM izstrādi un testēšanu. Maģistra darba ietvaros noteikta trīs BM veidu efektivitāte. Mini-lauka izmēģinājumos testēta BM-K un BM-S bioloģisko mēslojumu, attiecīgi, ar kūdru un kaņepju salmiem kā mikroorganismu nesējiem, ietekme uz rapšu (Brassica napus L.) un miežu (Hordeum vulgare L.) attīstību. No iegūtā augu materiāla izolēti augu augšanu veicinoši mikroorganismi, un tos adsorbējot uz 16 veidiem bioogles iegūti trešā BM , t. i., BM-B prototipi. Siltumnīcas veģetācijas eksperimentā testēta BM-B prototipu ietekme uz miežiem. BM-K nebija būtiskas ietekmes uz augu augšanu…

Progetto Energie Rinnovabili da Colture Agricole (E.Ri.C.A.): un'opportunità per le aziende agricole di diversificare e consolidare fonti di reddito

2013

Genetic variation in the Sicilian endangered populations of Brassica rupestris.

2011

Boll. Mus. Ist. Biol. Univ. Genova, 73, 2011 106° Congresso Società Botanica Italiana – Genova 21-23 settembre 2011 163 GENETIC VARIATION IN THE SICILIAN ENDANGERED BRASSICA RUPESTRIS F.M. RAIMONDO1, A. SCIALABBA1, G. ZECCA2, F. GRASSI2, G. CASAZZA3, L. MINUTO3 1 Department of Environment Biology and Biodiversity, University of Palermo, Via Archirafi 38, I-90123 Palermo, Italy. raimondo@unipa.it; germas@unipa.it; 2 Botanical Garden, Department of Biology, Università di Milano, Via Celoria 26, 20133 Milano, Italy. giovanni.zecca@gmail.com; fabrizio.grassi@guest.unimi.it; 3Department for the Study of Territory and its Resources, University of Genova, Corso Dogali 1M, I-16136 Genova, Italy. ga…

Data from: Symbiotic polydnavirus and venom reveal parasitoid to its hyperparasitoids

2018

Symbiotic relationships may provide organisms with key innovations that aid in the establishment of new niches. For example, during oviposition, some species of parasitoid wasps, whose larvae develop inside the bodies of other insects, inject polydnaviruses into their hosts. These symbiotic viruses disrupt host immune responses, allowing the parasitoid’s progeny to survive. Here, we show that symbiotic polydnaviruses also have a downside to the parasitoid’s progeny by initiating a multi-trophic chain of interactions that reveals the parasitoid larvae to their enemies. These enemies are hyperparasitoids that use the parasitoid progeny as host for their own offspring. We found that the virus …

Cytogenetical test to predict the vigour potential in Brassica seeds under long-term storage.

2013

Preservation of intraspecific diversity in seed banks is a common strategy to frontier the loss of biodi- versity, however long-term storage inevitably results in the loss of a certain percentage of seeds, there- fore causing the genetic erosion of a seed collection. For this reason seed quality monitoring is of out- standing importance to ensure that the regenerated genetic material is representative of the endemic nat- ural diversity once reintroduced in the environment, as well as to preserve the genetic biodiversity of species economically relevant for modern agriculture. Ageing amplification tests, in which seeds under- go osmotic stresses, enable to detect little differences in the vi…